5. Now I wish that you might all speak in [unknown] tongues, but more especially [I want you] to prophesy (to be inspired to preach and interpret the divine will and purpose). He who prophesies [who is inspired to preach and teach] is greater (more useful and more important) than he who speaks in [unknown] tongues, unless he should interpret [what he says], so that the church may be edified and receive good [from it].
6. Now, brethren, if I come to you speaking in [unknown] tongues, how shall I make it to your advantage unless I speak to you either in revelation (disclosure of God's will to man) in knowledge or in prophecy or in instruction?
7. If even inanimate musical instruments, such as the flute or the harp, do not give distinct notes, how will anyone [listening] know or understand what is played?
8. And if the war bugle gives an uncertain (indistinct) call, who will prepare for battle?
9. Just so it is with you; if you in the [unknown] tongue speak words that are not intelligible, how will anyone understand what you are saying? For you will be talking into empty space!
10. There are, I suppose, all these many [to us unknown] tongues in the world [somewhere], and none is destitute of [its own power of] expression and meaning.
11. But if I do not know the force and significance of the speech (language), I shall seem to be a foreigner to the one who speaks [to me], and the speaker who addresses [me] will seem a foreigner to me.
12. So it is with yourselves; since you are so eager and ambitious to possess spiritual endowments and manifestations of the [Holy] Spirit, [concentrate on] striving to excel and to abound [in them] in ways that will build up the church.
13. Therefore, the person who speaks in an [unknown] tongue should pray [for the power] to interpret and explain what he says.
14. For if I pray in an [unknown] tongue, my spirit [by the Holy Spirit within me] prays, but my mind is unproductive [it bears no fruit and helps nobody].
15. Then what am I to do? I will pray with my spirit [by the Holy Spirit that is within me], but I will also pray [intelligently] with my mind and understanding; I will sing with my spirit [by the Holy Spirit that is within me], but I will sing [intelligently] with my mind and understanding also.
16. Otherwise, if you bless and render thanks with [your] spirit [thoroughly aroused by the Holy Spirit], how can anyone in the position of an outsider or he who is not gifted with [interpreting of unknown] tongues, say the Amen to your thanksgiving, since he does not know what you are saying? [I Chron. 16:36; Ps. 106:48.]
17. To be sure, you may give thanks well (nobly), but the bystander is not edified [it does him no good].
18. I thank God that I speak in [strange] tongues (languages) more than any of you or all of you put together;
19. Nevertheless, in public worship, I would rather say five words with my understanding and intelligently in order to instruct others, than ten thousand words in a [strange] tongue (language).